Overview

The Watchtower has been shown as being on the moon, the base is supplied with the most highly advanced technology of many planets including Earth, Thanagar, Mars, Krypton, New Genesis and Apokolips as members hail from these various planets. It is made of promethium, a nigh-indestructible metal. Since it is not on Earth, it can be reached through the use of its teleportation tubes.

First Watchtower

The first Watchtower debuted in JLA #4 during Grant Morrison's acclaimed run on the title. Its layout was shown when the super-villain Prometheus used his computerized helmet to download all of the information from JLA servers.

Main areas are:

Solar Tower

Observation Deck

Laboratory Building

Armory

Steel’s Workshop

Hall of Justice

Monitor Womb

Hydroponic Forests

Aquaman's deep water tanks(connected via tunnels to surface pools)

Teleporters

Reception

Secure facility

Living quarters

Bulk teleport hangar

Sub-divisions include:

Research Lab

Medical Lab

Martian Jumpshuttle hangar

Lounge

Kitchen

Dining Area

Other areas include:

Engineering control

Trophy Room

Villain Gallery

Games/Recreation/Simulators

Gymnasium/Saunas

Pool(connected to deep water tank)

Park

Private teleporters

Air control

Tunnels to shuttle bay

Stairs to lower levels

Second Watchtower

This Watchtower was rebuilt and redesigned after the Injustice Gang razed the original structure during the onset of World War III.

Triumph - The Justice League's "lost" founding member William MacIntyre (Triumph) is forever frozen, transformed into a statue of ice for his treachery by the Spectre. Cooling units keep sublimation to a minimum, should the Spirit of Wrath choose to offer McIntryre a reprieve.

Wandjina's Labyris - Battleaxe belonging to " The Thunderer," a parallel dimension hero who perished stopping a Russian nuclear reactor meltdown after attempting to rid the communist nation of its deadly atomic arsenal.

Aztek's Helm - The late Justice Leaguer's sunmotif helmet was the source of his 4-dimensional powers. It remains in JLA possession pending a custody battle initiated by Aztek's former benefactors, the Q Foundation.

Martian Jump-Ship - Unaltered model of the Martian shuttle, seen in its primary configuration.

New 52

The New 52 Satellite Watchtower orbits 22,300 miles above Earth. How it was built has been left unexplained. Areas shown thus far are a main meeting chamber, spacecraft bay, teleporter, and Monitor Center. The Watchtower is defended by several small warships.

Other Media

Television

Justice League (2001 - 2004) DC Animated Universe

The First Watchtower

Following the attack of Earth by the White Martians, Batman would donate a secret Wayne Enterprises satellite station that is orbiting Earth as the base of operations for the newly formed Justice League.

The various members would utilize the Javelin-7 spaceplanes to shuttle back and forth. The Watchtower was subsequently destroyed in the season finale, "Starcrossed" by Batman, who used it to destroy a Thanagarian hyperspace generator that would have destroyed Earth.

Justice League Unlimited (2004 - 2006) DC Animated Universe

The Second Watchtower

In the sequel series; Justice League Unlimited which would continue where the first series ended; the Justice League would build a newer and much larger space station, accompanying the radical expansion of the League as well.

The new Watchtower is run by a vast support crew, possesses dozens of upgraded Javelin-7 space-planes, hosts a new teleportation transport system, and incorporates a powerful laser cannon. In addition, the Watchtower is defended by a series of smaller weapon sub-satellites.

Smallville (2001 - 2011) TV Series

Smallville Watchtower

Computer whiz and bona fide genius Chloe Sullivan, utilized the pseudonym "Watchtower" when she acted as the eyes and ears of the fledgling Justice League. The Metropolis penthouse apartment, given to her by Jimmy Olsen, became the base of operations for Watchtower.

After Chloe Sullivan resigned, the building continued to be known by this name, as it is was the home and headquarters for the Justice League, and the position was taken up by Tess Mercer.

Young Justice (2011-Present) TV Series

The Justice League watchtower in the TV show Young Justice appears to be built into an orbiting asteroid of some kind, and serves as the Justice League's actual base of operations, as opposed to their Hall of Justice on Earth's surface, which is just a cover story. It contains a large meeting hall and ready room, where the teleporters are located; this is where the League receives most information, has it's main computer system, and has most briefings that we've seen in the show thus far. It is also the site of Vandal Savage's mind control of the entire Justice League, and where he controlled them from.

It also contains at least one spacecraft bay.

Videogames

MK Vs DC Universe

The Watchtower is referred to as the "U.N. Satellite Space Station." In the game, it is an arena where Batman and other members of the League gather to fight against tyranny and monitor global threats. Although it is occupied by the League, the satellite was funded by the U.N., as a united global effort to protect humanity.

DC Universe Online

This is perhaps the most detailed non-canon version of the Watchtower. True to comic origins, it is an orbiting satellite 22,300 miles above Earth that was financed by Batman and built by John Stewart. The following areas that inhabit the Watchtower are:

Monitor Womb: A holographic projector of the Earth is visible 24/7. This is where unstable regions and threats are analyzed and prioritized, allowing the League to coordinate appropriate responses in promoting democracy and stability throughout the planet.

Hall of Justice: Not to be confused with the "Hall of Heroes," the Hall of Justice serves as the main meeting chamber for core members of the League.

Hall of Heroes: This room contains three large statues of the League's "Holy Trinity,"-Superman, Batman, and Wonder Woman.

War Room: This is a large facility dedicated to the training of all League members. Although most simulations are holographic, some require members to fight solid constructs that can actually harm them.

Hangar: Where the Watchtower's spacecraft fleet reside in case the League requires vehicles that are capable of interplanetary or interstellar travel.

Containment Facility: A highly patrolled area that serves as holding cells for the Justice League's most dangerous villains. Each cell is specialized to render the inhabiting villain's abilities inert and keep them in stasis.

Aqua-cultural Area: Room where many species(both human and alien in origin) of plants reside. They provide the Watchtower with a recyclable air supply.

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